}
	if val == -1 {
		delete(l.dynid, i)
	} else {
		l.dynid[i] = val
	}
}

// DynidSyms returns the set of symbols for which dynID is set to an
// interesting (non-default) value. This is expected to be a fairly
// small set.
func (l *Loader) DynidSyms() []Sym {
	sl := make([]Sym, 0, len(l.dynid))
	for s := range l.dynid {
		sl = append(sl, s)
	}

	for _, sy := range ldr.DynidSyms() {

		dynid := ldr.SymDynid(sy)
		if ldr.SymDynimpvers(sy) != "" {
			need[dynid] = addelflib(&needlib, ldr.SymDynimplib(sy), ldr.SymDynimpvers(sy))
		}

		name := ldr.SymExtname(sy)
		hc := elfhash(name)

		b := hc % uint32(nbucket)
		chain[dynid] = buckets[b]
		buckets[b] = uint32(dynid)
	}

	// s390x (ELF64) hash table entries are 8 bytes

		}
	}

	nsortsym = len(sortsym)
}

func machosymorder(ctxt *Link) {
	ldr := ctxt.loader

	// On Mac OS X Mountain Lion, we must sort exported symbols
	// So we sort them here and pre-allocate dynid for them
	// See https://golang.org/issue/4029
	for _, s := range ctxt.dynexp {
		if !ldr.AttrReachable(s) {
			panic("dynexp symbol is not reachable")
		}
	}
	collectmachosyms(ctxt)

			ctxt.Out.Write16(IMAGE_REL_ARM_ADDR32)
		case "arm64":
			ctxt.Out.Write16(IMAGE_REL_ARM64_ADDR64)
		}
		return 1
	})
}

// writeSymbol appends symbol s to file f symbol table.
// It also sets s.Dynid to written symbol number.
func (f *peFile) writeSymbol(out *OutBuf, ldr *loader.Loader, s loader.Sym, name string, value int64, sectidx int, typ uint16, class uint8) {
	if len(name) > 8 {
		out.Write32(0)

	"cmd/internal/sys"
	"cmd/link/internal/ld"
	"internal/buildcfg"
)

func Init() (*sys.Arch, ld.Arch) {
	arch := sys.ArchPPC64LE
	dynld := "/lib64/ld64.so.2"
	musl := "/lib/ld-musl-powerpc64le.so.1"

	if buildcfg.GOARCH == "ppc64" {
		arch = sys.ArchPPC64
		dynld = "/lib64/ld64.so.1"
		musl = "/lib/ld-musl-powerpc64.so.1"
	}

	theArch := ld.Arch{
		Funcalign:  funcAlign,
		Maxalign:   maxAlign,

		// rela
		rela.AddAddrPlus(target.Arch, got.Sym(), got.Size()-8)

		sDynid := ldr.SymDynid(s)
		rela.AddUint64(target.Arch, elf.R_INFO(uint32(sDynid), uint32(elf.R_X86_64_JMP_SLOT)))
		rela.AddUint64(target.Arch, 0)

		ldr.SetPlt(s, int32(plt.Size()-16))
	} else if target.IsDarwin() {
		ld.AddGotSym(target, ldr, syms, s, 0)

		sDynid := ldr.SymDynid(s)
		lep := ldr.MakeSymbolUpdater(syms.LinkEditPLT)

		//.plt index
		plt.AddUint32(target.Arch, uint32(rela.Size())) // rela size before current entry

		// rela
		rela.AddAddrPlus(target.Arch, got.Sym(), got.Size()-8)

		sDynid := ldr.SymDynid(s)
		rela.AddUint64(target.Arch, elf.R_INFO(uint32(sDynid), uint32(elf.R_390_JMP_SLOT)))
		rela.AddUint64(target.Arch, 0)

		ldr.SetPlt(s, int32(plt.Size()-32))

	} else {
		ldr.Errorf(s, "addpltsym: unsupported binary format")

		// jmp .plt
		plt.AddUint8(0xe9)

		plt.AddUint32(target.Arch, uint32(-(plt.Size() + 4)))

		// rel
		rel.AddAddrPlus(target.Arch, got.Sym(), got.Size()-4)

		sDynid := ldr.SymDynid(s)
		rel.AddUint32(target.Arch, elf.R_INFO32(uint32(sDynid), uint32(elf.R_386_JMP_SLOT)))

		ldr.SetPlt(s, int32(plt.Size()-16))
	} else {
		ldr.Errorf(s, "addpltsym: unsupported binary format")
	}

		// rela
		rela.AddAddrPlus(target.Arch, gotplt.Sym(), gotplt.Size()-8)
		sDynid := ldr.SymDynid(s)

		rela.AddUint64(target.Arch, elf.R_INFO(uint32(sDynid), uint32(elf.R_AARCH64_JUMP_SLOT)))
		rela.AddUint64(target.Arch, 0)

		ldr.SetPlt(s, int32(plt.Size()-16))
	} else if target.IsDarwin() {
		ld.AddGotSym(target, ldr, syms, s, 0)

		sDynid := ldr.SymDynid(s)
		lep := ldr.MakeSymbolUpdater(syms.LinkEditPLT)

	// add to got.plt: pointer to plt[0]
	gotplt.AddAddrPlus(target.Arch, plt.Sym(), 0)

	// rela
	rela.AddAddrPlus(target.Arch, gotplt.Sym(), gotplt.Size()-8)
	sDynid := ldr.SymDynid(s)

	rela.AddUint64(target.Arch, elf.R_INFO(uint32(sDynid), uint32(elf.R_RISCV_JUMP_SLOT)))
	rela.AddUint64(target.Arch, 0)
}

func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtReloc, int64) bool {